Characteristics for many 74X logic families

Characteristics for many 74X logic families

I got mail from several people expressing interest in this table of device characteristics for many 74X logic families. I have tried to include all of the common (and obsolete) families. I have included a basic logic gate (74x00), a tri-state buffer (74x244), and a flip-flop (74x374). I have not included a latch, just to get a religious debate about the difference between a latch and flip-flop going :) To reduce confusion, here are the meanings of the mnemonics I have used:


tPLH - prop delay from low to high
tPHL - prop delay from high to low
VOH - logic level 1 output voltage
VOL - logic level 0 output voltage
VIH - logic level 1 input voltage
VIL - logic level 0 input voltage
IOH, IOL, IIH, IIL - similarly
tPZH - prop delay from high impedance to high 
tPZL - prop delay from high impedance to low
tPHZ, tPLZ - similarly
f - toggle frequency

Note that prop delays for the x374s are clock to Q times. I use the output and input voltages to calculate noise margins and output and input currents for DC loading calculations. I hope that ya'll find this table of use. Of course, forward any errors to me, but keep differences at the right of the decimal point to yourselves, I'm a digital guy and such minor errors don't affect me :) The vendor chosen for each family is given next to each device. The vendor was chosen by which data book I happened to pick up first. Enjoy. Thanks to Jarrod Johnson for typing it all in.

tPLH(max) [ns] tPHL(max) [ns] VOH(min) [V] VOL(max) [V] VIH(min) [V] VIL(max) [V] IOH(max) [mA] IOL(max) [mA] IIH(max) [uA] IIL(max) [mA]
7400 (TI) 22 15 2.4 0.4 2 0.8 -0.4 16 40 -1.6
74S00 (TI) 4.5 5 2.7 0.5 2 0.8 -1 20 50 -2
74LS00 (TI) 15 15 2.7 0.4 2 0.8 -0.4 8 20 -0.4
74ALS00 * (National) 11 8 3 0.4 2 0.8 -0.4 8 20 -0.1
74F00 (Signetics) 5 4.3 2.5 0.5 2 0.8 -1 20 20 -0.6
74HC00 ** (TI) 23 23 3.84 0.33 3.15 0.9 -4 4
74AC00 ** (TI) 8 6.5 4.4 0.1 3.15 1.35 -75 75
74ACT00 ** (TI) 9 7 4.4 0.1 2 0.8 -75 75

	tPLH(max) [ns]	tPHL(max) [ns]	VOH(min) [V]	VOL(max) [V]	VIH(min) [V]	VIL(max) [V]	IOH(max) [mA]	IOL(max) [mA]	IIH(max) [uA]	IIL(max) [mA]
7400 (TI)	22	15	2.4	0.4	2	0.8	-0.4	16	40	-1.6
74S00 (TI)	4.5	5	2.7	0.5	2	0.8	-1	20	50	-2
74LS00 (TI)	15	15	2.7	0.4	2	0.8	-0.4	8	20	-0.4
74ALS00 * (National)	11	8	3	0.4	2	0.8	-0.4	8	20	-0.1
74F00 (Signetics)	5	4.3	2.5	0.5	2	0.8	-1	20	20	-0.6
74HC00 ** (TI)	23	23	3.84	0.33	3.15	0.9	-4	4
74AC00 ** (TI)	8	6.5	4.4	0.1	3.15	1.35	-75	75
74ACT00 ** (TI)	9	7	4.4	0.1	2	0.8	-75	75

tPLH(max) tPHL(max) tPZH(max) tPZL(max) tPHZ(max) tPLZ(max) VOH(min) VOL(max) VIH(min) VIL(max) IOH(max) IOL(max) IIH(max) IIL(max)
ns ns ns ns ns ns V V V V mA mA uA mA
74S244 (TI) 9 9 12 15 9 15 2.4 0.55 2 0.8 -15 64 50 -2
74LS244 (TI) 18 18 23 30 25 20 2.4 0.4 2 0.8 -15 24 20 -0.2
74ALS244 * (National) 10 10 20 20 10 13 3 0.4 2 0.8 -15 24 20 -0.1
74F244 (Signetics) 5.2 5.2 6.7 8 6 5.5 2.5 0.55 2 0.8 -15 64 20 -1
74HCT244 (TI) 35 35 44 44 44 44 3.84 0.33 2 0.8 -6 6
74HC244 ** (TI) 29 29 38 38 38 38 3.84 0.33 3.15 0.9 -6 6
74AC244 (TI) 7 7 7 8 9 9 3.76 0.44 3.15 1.35 -24 24
74ACT244 (TI) 9 9 8.5 9.5 9.5 10 3.76 0.44 2 0.8 -24 24
74BCT244 (TI) 4.4 6 7.8 8.1 6.7 7.6 2 0.55 2 0.8 -15 64 20 -1
74ABT244 (TI) 4.6 4.6 5.1 6.1 6.6 5.7 2 0.55 2 0.8 -24 64
74FCT244T (Quality) 3.8 3.8 5.6 5.6 5.2 5.2 2.4 0.55 2 0.8 -15 64 5 -0.005

	tPLH(max)	tPHL(max)	tPZH(max)	tPZL(max)	tPHZ(max)	tPLZ(max)	VOH(min)	VOL(max)	VIH(min)	VIL(max)	IOH(max)	IOL(max)	IIH(max)	IIL(max)
	ns	ns	ns	ns	ns	ns	V	V	V	V	mA	mA	uA	mA
74S244 (TI)	9	9	12	15	9	15	2.4	0.55	2	0.8	-15	64	50	-2
74LS244 (TI)	18	18	23	30	25	20	2.4	0.4	2	0.8	-15	24	20	-0.2
74ALS244 * (National)	10	10	20	20	10	13	3	0.4	2	0.8	-15	24	20	-0.1
74F244 (Signetics)	5.2	5.2	6.7	8	6	5.5	2.5	0.55	2	0.8	-15	64	20	-1
74HCT244 (TI)	35	35	44	44	44	44	3.84	0.33	2	0.8	-6	6
74HC244 ** (TI)	29	29	38	38	38	38	3.84	0.33	3.15	0.9	-6	6
74AC244 (TI)	7	7	7	8	9	9	3.76	0.44	3.15	1.35	-24	24
74ACT244 (TI)	9	9	8.5	9.5	9.5	10	3.76	0.44	2	0.8	-24	24
74BCT244 (TI)	4.4	6	7.8	8.1	6.7	7.6	2	0.55	2	0.8	-15	64	20	-1
74ABT244 (TI)	4.6	4.6	5.1	6.1	6.6	5.7	2	0.55	2	0.8	-24	64
74FCT244T (Quality)	3.8	3.8	5.6	5.6	5.2	5.2	2.4	0.55	2	0.8	-15	64	5	-0.005

f(max) tPLH(max) tPHL(max) tPZH(max) tPZL(max) tPHZ(max) tPLZ(max) VOH(min) VOL(max) VIH(min) VIL(max) IOH(max) IOL(max) IIH(max) IIL(max)
MHz ns ns ns ns ns ns V V V V mA mA uA mA
74S374 (TI) 100 15 17 15 18 9 12 2.4 0.5 2 0.8 -6.5 20 50 -0.25
74LS374 (TI) 50 28 28 26 28 28 20 2.4 0.5 2 0.8 -2.6 24 20 -0.4
74ALS374 ** (National) 35 12 16 17 18 10 18 3 0.5 2 0.8 -2.6 24 20 -0.2
74F374 (Signetics) 150 7.5 7.5 11 7.5 6 5.5 2.4 0.5 2 0.8 -3 24 20 -0.6
74HCT374 (TI) 25 45 45 38 38 38 38 3.84 0.33 2 0.8 -6 6
74HC374 ** (TI) 24 45 45 38 38 38 38 3.84 0.33 3.15 0.9 -6 6
74AC374 (TI) 155 9.5 9 8.5 8.5 11 8.5 3.76 0.44 3.15 1.35 -24 24
74ACT374 (TI) 160 10 9.5 9.5 9 11.5 8.5 3.76 0.44 2 0.8 -24 24
74BCT374 (TI) 70 9.1 8.8 10.1 10.6 6.3 6.3 2 0.55 2 0.8 -15 64 20 -0.6
74ABT374 (TI) 150 6.2 7.1 5.2 6.7 6.5 6.5 2 0.55 2 0.8 -24 64
74FCT374T (Quality) 250 4.5 4.5 5.5 5.5 5 5 2.4 0.5 2 0.8 -15 48 5 -0.005

	f(max)	tPLH(max)	tPHL(max)	tPZH(max)	tPZL(max)	tPHZ(max)	tPLZ(max)	VOH(min)	VOL(max)	VIH(min)	VIL(max)	IOH(max)	IOL(max)	IIH(max)	IIL(max)
	MHz	ns	ns	ns	ns	ns	ns	V	V	V	V	mA	mA	uA	mA
74S374 (TI)	100	15	17	15	18	9	12	2.4	0.5	2	0.8	-6.5	20	50	-0.25
74LS374 (TI)	50	28	28	26	28	28	20	2.4	0.5	2	0.8	-2.6	24	20	-0.4
74ALS374 ** (National)	35	12	16	17	18	10	18	3	0.5	2	0.8	-2.6	24	20	-0.2
74F374 (Signetics)	150	7.5	7.5	11	7.5	6	5.5	2.4	0.5	2	0.8	-3	24	20	-0.6
74HCT374 (TI)	25	45	45	38	38	38	38	3.84	0.33	2	0.8	-6	6
74HC374 ** (TI)	24	45	45	38	38	38	38	3.84	0.33	3.15	0.9	-6	6
74AC374 (TI)	155	9.5	9	8.5	8.5	11	8.5	3.76	0.44	3.15	1.35	-24	24
74ACT374 (TI)	160	10	9.5	9.5	9	11.5	8.5	3.76	0.44	2	0.8	-24	24
74BCT374 (TI)	70	9.1	8.8	10.1	10.6	6.3	6.3	2	0.55	2	0.8	-15	64	20	-0.6
74ABT374 (TI)	150	6.2	7.1	5.2	6.7	6.5	6.5	2	0.55	2	0.8	-24	64
74FCT374T (Quality)	250	4.5	4.5	5.5	5.5	5	5	2.4	0.5	2	0.8	-15	48	5	-0.005

* for VOH, assume VCC=5 V
** for VOH, assume VCC=4.5 V